Improvement in governor cut-off valves



UNITE-Dl STATES K. H. LOOMIS, OF BALTIMORE, MARYLAND.

PATENT 'A OFFICE.

IMPROVEMENT IN GOVERNOR CUT-OFF VALVES.

Specication forming part of Letters Patent No. 43,920, dated August 23, 1864.

To all whom it may concern.:

Be it known that I, K. H. LOOMIS, ofthe city and county of Baltimore, in the State of Maryland, have invented a new and useful Improvement in Variable Governor Cut-Os that the following is a full, clear, and exact description ot' the construction and operation ot` the same, reference bein g had to the annexed drawings, making a part of this specification, of which- Figure 1 is a side elevation showing a perf tion of valve-stem and adjustable arm. Fig. 2 is an end elevation showing head and adjustable arm. A

The nature of my improvement relates to and has for its object the providing a valiable governor cut-ott' for steam-engines, for the purpose of regulating the flow of steam to the cylinder and giving equality of motion to the engine.

Fig. 1 represents the ordinary cylinder valve, which may be constructed with more or less openings, so that a small motion of thekey of said valve may produce a greater or less steampassage.

The essential part vof my improvement consists in providing an adjustable arm vor lever for operating said valve by means hereinafter described.

a is the outer portion of valve-stem. c is a side view of adjustable arm. h is a wrist-pin, by which motion is communicated to said arm. fis the faceplate ofthe arm. q is the stud to which the governor is attached. A is the block attached to the stem of the valve. d is the end of the valve stem with the face-plate removed. B is a section showing a part of valvestem, block, arm, and face-plate, as shown in end view. c is a section showing ar portion of valve-stem and block, giving a side View.

To enable others skilled in the art to make and use my improvement, I will describe the 9construction and operation thereof.

The valve which I now use in combination with the improvement of adjustable arm is constructed with an external steam-chamber,

surrounding the key of said valve, from which chamber a series of openings, corresponding with openings both in shell and key, allowing the steam to pass from the external chamber to the internal chamber, thereby givin g atree for Steam-Engines; and I do hereby declare@ passage ofthe steam to the cylinder when said openings are set in a corresponding position.

I do not confine myself to this particular valve, as the adjustable arm above mentioned may be used advantageously with other valves. Again, l do not confine myself to any particular method ot' imparting motion to said valve,

as this may be accomplished by various de- Vices.

Having given a description of the construction of said valve, I will now more particularly` describe what I claim as my improvement in the manner of operating said valve, or its equivalent.

Y I secure a block on valve-stem, to which isy attached a sliding arm or lever, said arm or lever being provided with a slot or opening suflicient to allow said arm or lever to change its position in reference to its fulcrurn, being controlled by the governor in reference to length of said arm orlever, also receiving its vibratory motion by means of eccentric, rock.

A, secured to stem d, arm e, wrist-pin h, faeeplate j', and stud g, in the manner substantially and forthe purpose of regulating the flow of steam to the cylinder of steam-engines as set forth.

ln testimony whereof I have hereunto signed my name in the presence of two witnesses.

K. H. LOOMIS. Witnesses:

JN0. D. LIPsccMB, En. H. WILSON. 

